现代鲕粒工厂特征及对深时研究的启示  

Modern Ooid Factories and Clues to Understanding Their Deep-time Analogs

作　　者：李飞 李雅兰[1] 王曾俊 李杨凡 李滢 LI Fei;LI YaLan;WANG ZengJun;LI YangFan;LI Ying(School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610500,China;National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation&Natural Gas Geology Key Laboratory of Sichuan Province,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学地球科学与技术学院,成都610500 [2]西南石油大学油气藏地质及开发工程全国重点实验室和天然气地质四川省重点实验室,成都610500

出　　处：《沉积学报》2024年第2期371-386,共16页Acta Sedimentologica Sinica

基　　金：国家自然科学基金项目(42172136,41872119)。

摘　　要：【意义】海洋环境下形成的规模性鲕粒岩既是研究气候和环境演化的良好载体,又是重要的油气资源储库,具有极高的科研与经济价值。【进展】传统的鲕粒岩研究主要关注沉积序列、沉积模式和空间分布规模,而忽视了鲕粒滩体堆积、埋藏与成岩的动态过程,以及环境因素的变化对其演化过程的影响。通过对现代海洋环境下两种典型鲕粒工厂(镶边台地和缓坡)的生产者、构成、分布、建造过程、与其他工厂的关系,以及可能影响工厂发育的物理、化学和生物因素的综合分析,揭示了鲕粒工厂的发育特征。研究表明,强搅动水体环境、极高的碳酸盐矿物饱和度、有效的活跃—停滞状态转换是制约鲕粒工厂发育的关键因素,而不同的沉积背景和海平面变化则决定了工厂的发育环境和规模。【结论与展望】从碳酸盐工厂的角度出发,不仅为了解大规模鲕粒工厂的启动、繁盛和衰退过程及其影响因素提供了重要线索,也为评估其勘探价值提供了多维度的证据,还为探索深时和预测未来的环境变化对碳酸盐沉积体系的影响提供了新的思路。[Significance]The formation and preservation of large-scale oolites in marine environments are valuable tools in climate and environmental evolution studies,and also hold considerable importance as petroleum reservoirs.However,traditional studies on oolites have focused primarily on their depositional sequences,patterns and spatial distribution,almost overlooking the dynamic processes of ooid shoal accumulation,burial and diagenesis,as well as the influence of environmental controls on their development.[Progress]This study aims to address this gap by a comprehensive analysis of typical ooid factories(rimmed shelves and ramps)in modern marine environments.It examines their producers,composition,distribution,construction process,relationship with other carbonate factories and the physical,chemical and biological factors influencing their development.It was found that the key limiting factors on the development of ooid factories include strong turbulent water conditions,high carbonate mineral saturation,and effective active-stationary stage transitions.Additionally,the developmental environment and scale of these factories are determined by their specific depositional backgrounds.[Conclusions and Prospects]From a carbonate factory perspective,this study provides important insights into the initiation-flourishing-decline processes of largescale ooid factories,and offers multidimensional evidence for evaluating their value in oil and gas exploration.Furthermore,it provides new insights for exploring the deep-time environment and predicting future changes on carbonate depositional systems.

关 键 词：碳酸盐生产 控制因素 镶边台地 缓坡 定量评价 古环境演化 

分 类 号：P588.245[天文地球—岩石学]